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Finding the Fourth Proportional to 701,971,201.45, 968,708,419.00 and 388,698,689.38

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Solution

The fourth proportional to 701,971,201.45, 968,708,419.00 and 388,698,689.38 is: 536,397,635.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    701,971,201.45 : 968,708,419.00 = 388,698,689.38 : x
  2. Step 2: Convert to fraction form
    701,971,201.45/968,708,419.00 = 388,698,689.38/x
  3. Step 3: Cross multiply
    701,971,201.45x = 968,708,419.00 × 388,698,689.38
  4. Step 4: Simplify right side
    701,971,201.45x = 376,535,692,852,377,408
  5. Step 5: Solve for x
    x = 376,535,692,852,377,408/701,971,201.45
  6. Step 6: Final answer
    x = 536,397,635.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.